I was thinking of a wand/whip/flog to tame endermen to use them to move and replace blocks quickly for you.
Crafted like this:
And it makes the Enderstick.
On Right-Click of an Enderman with the Enderstick, he becomes yours. Then, with Enderstick in hand, if the Enderman isn't holding a block already, right-click a block to pick it up. Then, right-click again on the face of a block you want it placed, and the enderman will place it for you. This saves Smooth stone and glass, and saves time re-breaking and re-placing blocks, especially obsidian or other blocks that take a while to break.
I know I may be jumping the gun, but this is for whenever Endermen come out.
Okay, so there is a bit of a confusion as to what this idea is for. Before Endermen come out, how about it just works as an individual block-moving wand, and on Endermen release, we can add the tame part and the 'Enderman required to move this block!' part.
Also, I'd LOVE it if you people would post.